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2.7.46 杆塔组立Pole and tower erection 线路施工中对杆塔构件组合和起立。 2.7.47 杆塔组立施I机具Tool and machine for erection of pole and tower 2.7.48 高空作业High-altitude operation High-lift operation 2.7.49 故障检测器Fault detector 2.7.50 故障距离探测器Fault locator 2.7.51 故障探测器Fault detector 2.7.52合成绝缘杆Synthetic insulating rod 2.7.53 弧垂Sag 2.7.54 换位Transposition 2.7.55 架空输电线路设计Overhead transmission line design 2.7.56 架空输电线路设计勘测Survey and exploration for overhead transmission line design 2.7.57 架空输电线路施工Overhead transmission line construction 2.7.58 架空线弛度Overhead line sag 自两悬挂点的连线沿荷载方向到架空线轴线间的距离。 2.7.59 架空线微风振动Aerolian vibration of overhead line 架空线受微风横吹产生的小振幅振动。 2.7.60架空线永久性伸长Permanent elongation of overhead line 架空线受拉伸长，撤力后长度不复原的永久性变形。 2.7.61 架线施工Installation of overhead conductor and ground wire 2.7.62 架线施工机具Tool and machine for installation of overhead conductor 2.7.63 交叉跨越测量Crossover survey 对交叉跨越杆塔的测量。 2.7.64 绞车Winch 2.7.65 紧线Tension stringing 2.7.66 卷扬机Winch 2.7.67 气象资料Meteorological data 2.7.68 牵引机Puller 2.7.69 施工设计Construction design 2.7.70 输电线路测量Transmission route survey 2.7.71 输配电线路金具Power transmission line hardware 2.7.72 线路测量Transmission line survey 2.7.73 线路电气设计Electrical design of line 2.7.74 线路断面图Line sectional drawing 2.7.75 线路防护Line protection 2.7.76 线路防雷设计Line lightning-protection design |